|Publication number||US4903841 A|
|Application number||US 07/271,792|
|Publication date||Feb 27, 1990|
|Filing date||Nov 16, 1988|
|Priority date||Sep 29, 1988|
|Also published as||CA1327547C, DE3877962D1, DE3877962T2, EP0363540A2, EP0363540A3, EP0363540B1|
|Publication number||07271792, 271792, US 4903841 A, US 4903841A, US-A-4903841, US4903841 A, US4903841A|
|Inventors||Shigeyuki Ohsima, Yoshiji Moteki|
|Original Assignee||Kabushiki Kaisha Hosokawa Yoko|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (38), Referenced by (78), Classifications (14), Legal Events (4)|
|External Links: USPTO, USPTO Assignment, Espacenet|
The present invention relates to a pouch for sealingly containing retort food which is easily tearable for discharging the food.
A laminate sheet is conventionally used as a material of a pouch for containing a retort food. The laminate sheet includes a laminate film formed of plastic material layers, and an aluminum foil joined or deposited thereto for enhancing breakage strength and moisture-blocking function. The laminate film has a base substrate formed of a material selected from the group consisting of polypropylene, nylon and polyester, and the film is biaxially oriented film.
Generally, a rectangular laminate sheet is folded into two sections in order to define front and rear walls, and confronting three side edge portions are heat sealed together to obtain a bag shape. Such pouch is ordinarily referred to as a "pillow type" pouch. Alternatively, two identical rectangular laminate sheets are prepared serving as the front and rear walls, and these are superposed together, and are joined at four side edge portions.
The laminate sheet of this type has high breaking strength, and therefore, it would be rather difficult to tear the pouch at the heat sealed portion so as to discharge a content packed therein. To overcome this problem, V-shaped or I-shaped notch is formed at at least one heat sealed portion in order to facilitate the tearing.
Still however, since the laminate sheet has sufficient breaking strength, it would be still difficult to align the tearing locus at the front wall with the tearing locus at the rear wall, even if tearing is initiated from the V-shaped or I-shaped notch. After tearing the pouch at the heat sealed zone, the tearing locus at a front wall of the pouch would be different from the tearing locus at the rear wall thereof. As a result, food or content may be disadvantageously flooded from the tearing opening. For example, if user only draw his attention to the front tearing line, the content may be leaked out of the rear tearing line, if the rear line is not coincident with the front line, but is positioned lower than the front line.
Another proposal has been made to overcome the above described drawback. According to the proposal, a base substrate film which also functions as heat sealing layer formed of non-oriented polypropylene is formed over an aluminum film, and linear slits are formed at the base substrate film so as to facilitate tearing. However, it would be rather difficult to align a slit at the front wall of the pouch will a slit at the rear wall thereof, and resultant pouch does not provide sufficient impact strength. Further, the aluminum foil may be directly contacted with the content which will pass through the slits of the heat sealing layer, and therefore, corrosion may occur in the aluminum foil.
It is therefore, an object of the present invention to overcome the above described prior art drawbacks and disadvantages, and to provide an improved pouch for containing a food or other content.
Another object of this invention is to provide such pouch which has sufficient sealability yet easily tearable for discharging the content.
According to this invention, there is provided a pouch for containing a content, the pouch including a rectangular front wall and a rectangular rear wall having identical shape with the front wall, at least three heat sealed sections having a first side heat seal portion heat sealed together at one confronting side edge portions of the front and rear walls, a second side heat seal portion heat sealed together at another confronting side edge portions of the front and rear walls, and a top heat sealed portion heat sealed together at confronting top edge portions of the front and wear walls, the improvement comprising: the front and rear walls being formed of a laminate sheet comprising a plastic film layer, a content blockage layer formed over the plastic film layer, and an aluminum foil, one of the plastic film layer and the content blockage layer being bonded to the aluminum foil; the first side heat seal portion being formed with a notch; and the plastic film layer of the front and rear walls being formed with first and second surface roughened zones each extending from the first side heat seal portion to the second side heat seal portion in parallel with the top heat seal portion, each one ends of the surface roughened zones being in alignment with the notch and the first and second surface roughened zones being superposed with each other.
Upon initiating the tearing at the notch, the pouch can be torn along the surface roughened zones to the another side seal portion. During this tearing, the front and rear tearing lines are aligned with each other, so that the content can be preserved in the pouch. Further, since the content blockage layer is provided, the aluminum foil is not subjected to corrosion due to contact with the content which may pass through minute holes at the surface roghened zone.
In the drawings:
FIG. 1 is a schematic front view showing a pillow type pouch in which a top opening is not heat sealed according to this invention;
FIG. 2 is a front view showing the pillow type pouch in which a top opening is heat sealed according to this invention;
FIG. 3 is a cross-sectional view showing a laminate sheet used as the pouch according to this invention; and,
FIG. 4 is a plan view showing a rectangular laminate sheet prior to heat sealing for constructing the pillow type pouch according to this invention.
One embodiment according to this invention will be described with reference to accompanying drawings.
A pillow type pouch prior to filling a content or product therein is shown in FIG. 1. The pillow type pouch 1 is formed of a laminate sheet 2 and includes a rectangular front wall F, a rectangular rear wall R having a shape identical with the front wall, a bottom portion 3, which is a folding line (23 in FIG. 4), a first side heat sealed portion or seam 4, a second side heat sealed portion or seam 5, and a top opening 6. Confronting side edge portions of the front and rear walls are heat sealed together to provide the first and second side heat sealed portions 4 and 5. These side heat sealed portions are heat sealed by an ordinary heat sealing device. Further, as shown in FIG. 2, confronting top edges are also heat sealed together to provide a top heat sealed portion or seam 7 after the content is filled in the pouch through the top opening 6.
A notch 8 is formed at the first side heat sealed portion 4 at a position adjacent the top heat sealed portion 6. According to the present invention, a surface roughened zone 9 having a small width is provided at inner surfaces of the front and rear wall F and R. The surface roughened zone 9 extends from the notch 8 to the second side heat sealed portion 5 in parallel with the top heat sealed portion 7.
As shown in FIG. 3, the laminate film 2 includes a polyester film layer 10 having a thickness of 12 microns and serving as an external surface layer Fo, and adhesive layer 11, an aluminum foil 12 having a thickness of 9 microns, an adhesive resin layer 13, a first cast polypropylene film layer 14 having a thickness of 15 microns, and a second cast polypropylene film layer 15 having a thickness of 50 microns and serving as an inner surface Fi. The first cast polypropylene film layer 14 serves as a content blockage layer described later. At the second cast polypropylene film layer 15, the surface roughened portion 9 is formed. The adhesive layer 11 serves to bond the outer layer 10 to the alumninum foil 12, and the adhesive resin layer 13 serves to bond the first cast polypropylene film layer 14 to the aluminum foil 12. Further, the second cast polypropylene film layer 15 serves as the heat sealed material. The surface roughened portion 9 is formed with surface scored lines 9a each extending in directions parallel with the extending direction of the zone 9. The scored lines 9a can be formed mechanically. For example, the cast polypropylene film layer 15 is subjected to knurling by a roller formed with a plurality of circumferentially extending projections. Alternatively, perforated score lines(s) is also available to provide the surface roughened portion. After the one surface Fi of the innermost layer 15 is subjected to scoring, he first cast polypropylene layer 14 is joined to another surface (flat surface) of the innermost layer 15 by extrusion molding. Therefore, the polypropylene layer has a total thickness of 65 microns, and non-scored layer 14 is interposed between the aluminum layer 12 and the scored layer 15.
A production of such pouch will next be described with reference to FIG. 4. Firstly, an elongated rectangular laminate sheet 20 is prepared. The sheet has a length twice as large as a length of the resultant pouch and a width equal to that of the resultant pouch, and a foldable line 23 is defined at a central portion of the sheet 20. One longitudinal edge portion 22 serves as the first heat sealed portion 4, and another longitudinal edge portion 22' serves as the second heat sealed portion 5. Further, end edges 21 and 21' serve as the top heat sealed portion 7. Upon folding the rectangular laminate sheet 20 at the folding line 23, these edge portions confront with each other. Further, a pair of surface roughened portion 9, 9' are formed at positions close to the end edges 21 and 21', respectively. The roughened portion 9, 9' extend in parallel with the end edges 21, 21'. Each one end of the roughened portions is provided even at the one longitudinal edge portion 22, and each another end of the roughened portions is provided even at the other longitudinal edge portion 22'. Of course, the surface roughened portions 9 and 9' are superposed together when folding the elongated sheet 20.
Then, after the elongated sheet 20 is foled into two sections F and R at the foldable line 23, confronting longitudinal edge portions 22 and 22' are heat sealed to provide a bag shaped configuration. In this case, the surface roughned portions 9 and 9' confront with each other. Thereafter the notch 8 is formed at the first side heat sealed portion 4 at a position in alignment with the surface roughened portion 9 and 9'. Then, a content is filled into the bag shaped pouch through the top opening 6, and thereafter, the top opening is also heat sealed together at the zones 21 and 21'.
For taking out the content, user grips both sides of the notch 8 and pulls the first side heat sealed portion 4 in opposite directions with respect to the notch 8. As a result, tearing occurs at the notch portion 8 and is propagated along the surface roughened portion 9 which is contiguous with the notch. This tearing is easily and continuously propagated to the second side heat sealed portion 5, because of the formation of the surface roughened portion 9 reaching thereto. In this case, since the surface roughened portion 9' at the front wall F is in alignment with the surface roughened portion 9 at the rear wall R, tearing lines at the front and rear walls are also aligned with each other, and accordingly, no inadvertent content flooding occurs.
Further, even if the scored lines 9a penetrate the second cast polypropylene film layer 15 in thickness direction and the internal content is entered into the scored holes, (if perforated scored lines are formed to form the surface roughened portion 9, such penetration does occur), the content does not reach the aluminum foil 12 since the intermedate first cast polypropylene layer 14 (content blockage layer) is interposed between the aluminum foil 12 and the innermost layer 15. Accordingly, even if the content is stored in the pouch for a long period of time, corrosion of the aluminum foil 12 by the contact with the content never occurs, which in turn, can maintain the content in stabilized quality for a long duration of time.
In the above described embodiment, the pillow type pouch is described. However, four side seal pouch is also available in the present invention wherein two identically shaped laminate sheets are superposed together and heat sealed together. Further, in the above described embodiment, the scored lines 9a are in direct contact with the content packed in the pouch. However, it would be also possible to bond the scored layer directly to the aluminum foil, and the above mentioned first cast polypropylene 14 is functioned as the innermost layer in contact with the content.
In view of the foregoing, according to the present invention, the tearing position has already been determined by the surface roughened portion 9 and 9' which have mechanical strength smaller than the non roughened portion, and these surface roughened portions 9 and 9' are superposed with each other. Therefore, the pouch is easily tearable along the surface roubhened portions. Further, the tearing line at the front wall of the pouch is also superposed with the tearing line at the rear wall thereof, so that inadvertant flooding of content is avoidable. Furthermore, the additional cast polypropylene film 14 can prevent the content from reaching the aluminum foil through the scored portions. Therefore, corrosion of aluminum foil is avoidable, to thus maintain the content in stabilized quality for a long period of time.
While the invention has been described in detail and with reference to specific embodiment thereof, it would be apparent for those skilled in the art that various chages and modifications can be made therein without departing from the spirit and scope of the invention.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US465562 *||Mar 7, 1891||Dec 22, 1891||Air-heating system|
|US477858 *||Nov 24, 1891||Jun 28, 1892||Swing|
|US2333587 *||Nov 19, 1942||Nov 2, 1943||Ivers Lee Co||Fold-closed package|
|US2923404 *||Aug 30, 1956||Feb 2, 1960||Robert Adell||Container for alcoholic beverages|
|US3146912 *||May 14, 1962||Sep 1, 1964||Twersky Louis S||Package opening means|
|US3172443 *||Feb 19, 1962||Mar 9, 1965||Ausnit Steven||Plastic fastener|
|US3181583 *||Sep 24, 1962||May 4, 1965||Daniel J Lingenfelter||Reclosable plastic container|
|US3226787 *||May 17, 1962||Jan 4, 1966||Ausnit Steven||Double extruded fastener strips|
|US3272424 *||Jan 11, 1965||Sep 13, 1966||Dow Chemical Co||Flexible container|
|US3323707 *||Feb 15, 1966||Jun 6, 1967||King Leonard H||Tear-open package|
|US3473589 *||Dec 9, 1966||Oct 21, 1969||Minigrip Inc||Plastic bag|
|US3616990 *||May 1, 1969||Nov 2, 1971||Powell Joseph J||Easy-tear arrangement for stretchable plastic film|
|US3619395 *||Apr 17, 1969||Nov 9, 1971||Minigrip Inc||Method of making a pilfer proof package|
|US3625351 *||Apr 22, 1969||Dec 7, 1971||Eisenberg Melvin I||A sterilized tearable bag|
|US3679511 *||Feb 18, 1970||Jul 25, 1972||Ausnit Steven||Flexible pilfer proof closure construction for bags|
|US3685645 *||Aug 17, 1970||Aug 22, 1972||Physio Control Corp||Defibrillation electrode pad and package therefor|
|US3799914 *||Apr 29, 1970||Mar 26, 1974||Jenos Inc||Standable flexible container with straw|
|US3827472 *||Feb 16, 1972||Aug 6, 1974||Seisan Nipponsha Kk||Reclosable bag|
|US4479244 *||Sep 30, 1982||Oct 23, 1984||Steven Ausnit||Easy opening bag|
|US4498591 *||Oct 20, 1980||Feb 12, 1985||Drug Concentrates, Inc.||Openable flexible packet|
|US4543279 *||Mar 3, 1983||Sep 24, 1985||Taisei Kako Kabushiki Kaisha||Plastic film product|
|US4570820 *||Jan 23, 1985||Feb 18, 1986||Creative Products Resource Associates, Ltd.||Resealable dispensing container for folded towels|
|US4589145 *||Oct 31, 1983||May 13, 1986||Signode Corporation||Packaging material and package|
|US4598826 *||Nov 9, 1984||Jul 8, 1986||Minnesota Mining And Manufacturing Company||Heat-sealable, laminated package|
|US4615045 *||Nov 1, 1984||Sep 30, 1986||Minigrip, Inc.||Pilfer proof hangup bag structure and method|
|US4630311 *||Nov 29, 1984||Dec 16, 1986||Minigrip, Inc.||Zipper-lock bag chain with tearable strip interconnection means|
|US4744674 *||Jan 7, 1987||May 17, 1988||Minigrip, Inc.||Non-reclosable mechanically fillable and closable link bag structure and method|
|US4759643 *||Aug 24, 1987||Jul 26, 1988||Equitable Bag Company, Inc.||Self-sealing envelope|
|US4777054 *||Nov 6, 1986||Oct 11, 1988||Perfect Holdings, Ltd.||Easy open package|
|US4778058 *||Sep 21, 1987||Oct 18, 1988||Kabushiki Kaisha Hosokawa Yoko||Pouch or sack for packing and laminate film therefor and method for producing the pouch|
|US4785937 *||Apr 6, 1987||Nov 22, 1988||Kabushiki Kaisha Hosokawa Yoko||Retortable pouch and packaging material for the retortable pouch|
|US4786190 *||Mar 10, 1988||Nov 22, 1988||Minigrip, Inc.||Reclosable package having outer reclosable closure and inner non-reclosable closure|
|US4832505 *||Mar 11, 1988||May 23, 1989||Minigrip, Inc.||Tamper evident link bags|
|US4834245 *||Aug 5, 1988||May 30, 1989||Kabushiki Kaisha Hosokawa Yoko||Pouch having tearing zone for taking out content packed therein|
|DE1112446B *||Aug 8, 1957||Aug 3, 1961||Werner & Mertz Gmbh||Innerer, sekundaerer Verschluss einer flexiblen Kunststoffverpackung zum Verpacken und zur Entnahme beliebiger Mengen von fluessigen oder pastoesen Fuellguetern|
|EP0109965A1 *||Nov 26, 1982||Jun 13, 1984||Embalarte Industria E Comercio Ltda.||Wrapping for containing liquid products of differing viscosity|
|GB1088564A *||Title not available|
|WO1987002968A1 *||Oct 30, 1986||May 21, 1987||Kcl Corporation||Reclosable flexible container|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US5038547 *||Oct 6, 1989||Aug 13, 1991||Asahi Chemical Polyflex, Ltd.||Method for producing an easily openable tightly sealed bag|
|US5312659 *||Jun 23, 1992||May 17, 1994||Toyo Seikan Kaisha Ltd.||Laminated film bag for packaging food|
|US5512337 *||Jan 24, 1994||Apr 30, 1996||American National Can Company||Packages with controlled easy open features|
|US5613779 *||Nov 30, 1994||Mar 25, 1997||Kabushiki Kaisha Hosokawa Yoko||Pouch|
|US5620095 *||Mar 10, 1995||Apr 15, 1997||Minnesota Mining And Manufacturing Company||Orthopedic casting material and hermetic package|
|US5743405 *||Sep 5, 1996||Apr 28, 1998||Reid; Brenda C.||Food storage container|
|US5878549 *||Sep 29, 1997||Mar 9, 1999||American National Can Company||Packages with controlled easy-open features|
|US5984088 *||Feb 4, 1997||Nov 16, 1999||3M Innovative Properties Company||Easy open package and method of making same|
|US6102571 *||Apr 29, 1999||Aug 15, 2000||Hosokawa Yoko Co., Ltd.||Packaging bag|
|US6318893 *||May 2, 2000||Nov 20, 2001||Gates Automation, Inc.||Bag for automated filing and sealing machine|
|US6550223||Mar 2, 2001||Apr 22, 2003||Tempra Technology Inc.||Evacuatable, heat sealable package and method of using the same|
|US6610338||Dec 31, 1998||Aug 26, 2003||Teckson International Limited||Easy tearing bags and packaging material|
|US6616333||Apr 18, 2001||Sep 9, 2003||Kraft Foods Holdings, Inc.||Fastener closure arrangement for flexible packages|
|US6726363 *||Jan 4, 2000||Apr 27, 2004||Alcan Technology & Management Ltd.||Packaging comprised of a foil-shaped composite material and method for producing said packaging|
|US6834474||Sep 20, 2002||Dec 28, 2004||Kraft Foods Holdings, Inc.||Package with zipper closure|
|US6846532 *||Feb 15, 2001||Jan 25, 2005||Sonoco Development, Inc.||Laminate packaging material|
|US6863646||Jun 19, 2002||Mar 8, 2005||Kraft Foods Holdings, Inc.||Reclosable system for flexible packages having interlocking fasteners|
|US6939041||Jan 29, 2003||Sep 6, 2005||Kraft Foods Holdings, Inc.||Fastener closure arrangement for flexible packages|
|US6974256||Aug 30, 2001||Dec 13, 2005||Kraft Foods Holdings, Inc.||Fastener closure arrangement for flexible packages|
|US7111986||Dec 5, 2003||Sep 26, 2006||Alcan Technology & Management||Packing made from a film-like laminate and process for production of this packing|
|US7207719||Dec 5, 2003||Apr 24, 2007||Alcan Technology & Management Ltd.||Packing made from a film-like laminate and process for production of this packing|
|US7306370||Dec 8, 2003||Dec 11, 2007||Kraft Foods Holdings, Inc.||Shrouded flexible packages|
|US7481581 *||Sep 25, 2003||Jan 27, 2009||Hosokawa Yoko Co., Ltd.||Packaging bag|
|US7578256 *||Jul 24, 2007||Aug 25, 2009||Matthew Daley||Bookmark|
|US7862869||Oct 20, 2003||Jan 4, 2011||Milprint, Inc.||Tear initiation and directional tear films and packages made therefrom|
|US7900471||May 27, 2008||Mar 8, 2011||S. I. Incorporated||Pre-packaged, flexible container of ice and air|
|US8122687||Jul 31, 2003||Feb 28, 2012||Kraft Foods Global Brands Llc||Method of making flexible packages having slide closures|
|US8153214||Sep 8, 2005||Apr 10, 2012||Alcan Packaging Italia S.R.L.||Multilayer laminated film for packages|
|US8307983 *||Oct 9, 2005||Nov 13, 2012||Lts Lohmann Therapie-Systeme Ag||Non-reclosable package for products prejudicial to health, as well as process for its production|
|US8534461||Oct 15, 2012||Sep 17, 2013||Lts Lohmann Therapie-Systeme Ag||Non-reclosable package for products prejudicial to health, as well as process for its production|
|US8932725||Jul 28, 2011||Jan 13, 2015||Toray Plastics (America), Inc.||Heat sealable film with linear tear properties|
|US8932726||Aug 31, 2011||Jan 13, 2015||Toray Plastics (America), Inc.||High barrier heat sealable film with linear tear properties|
|US8951590 *||Sep 2, 2011||Feb 10, 2015||Ritter Schönbuch Vermögensverwaltungs GmbH & Co. KG||Tubular bag packaging and method for producing such tubular bag packaging|
|US9399318||Sep 12, 2014||Jul 26, 2016||Toray Plastics (America), Inc.||High barrier heat sealable film with linear tear properties|
|US9427710||Mar 15, 2013||Aug 30, 2016||Bemis Company, Inc.||Radial filtration vent and medical device packaging|
|US20020154836 *||Aug 30, 2001||Oct 24, 2002||Kraft Foods Holdings, Inc.||Fastener closure arrangement for flexible packages|
|US20030138169 *||Jan 22, 2002||Jul 24, 2003||Mars Incorporated||Angled sealing pattern for retort pouch to create cold corners|
|US20040086207 *||Dec 5, 2003||May 6, 2004||Marbler Claude A.||Packing made from a film-like laminate and process for production of this packing|
|US20040109618 *||Dec 5, 2003||Jun 10, 2004||Marbler Claude A.||Packing made from a film-like laminate and process for production of this packing|
|US20040118859 *||Oct 10, 2003||Jun 24, 2004||Super Chill Beverage Group, Inc.||Fluid container pouch|
|US20040146222 *||Jan 29, 2003||Jul 29, 2004||Kraft Foods Holdings, Inc.||Fastener closure arrangement for flexible packages|
|US20050025394 *||Jul 31, 2003||Feb 3, 2005||Kraft Foods Holdings, Inc.||Flexible packages having slide closures and apparatus for their manufacture|
|US20050025395 *||Dec 8, 2003||Feb 3, 2005||Kraft Foods Holdings, Inc.||Shrouded flexible packages|
|US20050084636 *||Oct 20, 2003||Apr 21, 2005||Papenfuss Daniel S.||Tear initiation and directional tear films and packages made therefrom|
|US20060072861 *||Sep 25, 2003||Apr 6, 2006||Hosokawa Yoko Col, Ltd.||Packaging bag|
|US20060199717 *||Jan 23, 2006||Sep 7, 2006||Marbler Claude A||Packing made from a film-like laminate and process for production of this packing|
|US20070173395 *||Mar 30, 2007||Jul 26, 2007||Alcan Packaging Italia S.R.L.||Packaging of the stickpack type with improved opening and method for manufacturing the same|
|US20070206888 *||Mar 6, 2006||Sep 6, 2007||Chia-Hsiang Chang||Multi-pocket specimen bag incorporating easy tear lines for removal of pre-sealed inserts|
|US20070224316 *||Jun 15, 2006||Sep 27, 2007||Andre Beukes||Alcoholic beverage dispensing system|
|US20070274615 *||Jun 18, 2004||Nov 29, 2007||Mars, Inc.||Flexible Pouch With Tear Line|
|US20070297702 *||Sep 8, 2005||Dec 27, 2007||Zaggia Carlo A||Multilayer Laminated Film For Packages|
|US20080011220 *||Jul 24, 2007||Jan 17, 2008||Matthew Daley||Bookmark|
|US20080063324 *||Sep 12, 2007||Mar 13, 2008||Bernard Stuart N||Pouch opening feature|
|US20080105582 *||Oct 9, 2005||May 8, 2008||Lts Lohmann Therapie-Systeme Ag||Non-Reclosable Package for Products Prejudicial to Health, as well as Process for its Production|
|US20090014491 *||Feb 28, 2008||Jan 15, 2009||Monosol Rx, Llc.||Packet structure, such as for a film strip|
|US20090293434 *||May 27, 2008||Dec 3, 2009||S. I. Incorporated, Dba "Serv-Ice"||Method of forming a pre-packaged, flexible container of ice and air|
|US20090293536 *||May 27, 2008||Dec 3, 2009||S. I. Incorporated, Dba "Serv-Ice"||Pre-packaged, flexible container of ice and air|
|US20090297691 *||May 27, 2008||Dec 3, 2009||S. I. Incorporated, Dba "Serv-Ice"||Method of serving a drink to a person|
|US20100055429 *||Aug 17, 2009||Mar 4, 2010||Toray Plastics (America), Inc.||Heat sealable monoaxially oriented propylene-based film with directional tear|
|US20100142863 *||Aug 16, 2006||Jun 10, 2010||Amcor Flexibles A/S||Easy-To-Open Packaging Comprising A Laminate And Production Method Of Said Laminate|
|US20110079608 *||Oct 5, 2009||Apr 7, 2011||Marc Mamiye||Multi-chamber, individually accessible pouch for content dispensing|
|US20120058231 *||Sep 2, 2011||Mar 8, 2012||Ritter Schoenbuch Vermoegensverwaltungs Gmbh & Co. Kg||Tubular Bag Packaging and Method for Producing Such Tubular Bag Packaging|
|US20150259103 *||Mar 14, 2014||Sep 17, 2015||Chih-Hung Chen||Plastic bags|
|USD734165||Mar 14, 2013||Jul 14, 2015||Hollister, Inc.||Catheter package|
|USD746152||Jun 4, 2014||Dec 29, 2015||Hollister Incorporated||Catheter package|
|USD752452||Jun 4, 2015||Mar 29, 2016||Hollister Incorporated||Catheter package|
|USD764943||Jun 4, 2014||Aug 30, 2016||Hollister Incorporated||Catheter package|
|CN1113022C *||Jan 5, 1999||Jul 2, 2003||特克逊国际有限公司||Easy tearing bags and packaging material|
|DE4230777A1 *||Sep 15, 1992||Mar 17, 1994||Reinhard Albrecht||Anti-personnel defence weapon - comprising capsule with flexible walls fitted with a repellent with a cross=section weakening.|
|EP1270430A1 *||Feb 22, 2001||Jan 2, 2003||Hisamitsu Pharmaceutical Co. Inc.||Packaging bag|
|EP1270430A4 *||Feb 22, 2001||Nov 5, 2008||Hisamitsu Pharmaceutical Co||Packaging bag|
|EP1757533A1 *||Aug 26, 2005||Feb 28, 2007||Amcor Flexibles A/S||Easy-to-open packaging comprising a laminate and production method of said laminate|
|EP2433788A1||Sep 22, 2010||Mar 28, 2012||Amcor Flexibles Transpac N.V.||Pre-cut multilayer packaging material|
|WO1999035048A1 *||Dec 24, 1998||Jul 15, 1999||Tecksom International Limited||Easy tearing bags and packaging material|
|WO2007022903A1 *||Aug 16, 2006||Mar 1, 2007||Amcor Flexibles A/S||Easy-to-open packaging comprising a laminate and production method of said laminate|
|WO2012038111A1||Jul 8, 2011||Mar 29, 2012||Amcor Flexibles Transpac Nv||Pre-cut multilayer packaging material|
|WO2013072860A3 *||Nov 14, 2012||Aug 15, 2013||Safta S.P.A.||Pouch, apparatus and method|
|WO2014113016A1||Jan 18, 2013||Jul 24, 2014||Perfecseal, Inc.||Tear-open pouch for fragile thin materials|
|U.S. Classification||383/200, 383/201, 229/237|
|International Classification||B65D75/62, B65D30/08, B65D17/28, B65D75/20, B65D33/00, B65D75/58, B65D75/26|
|Cooperative Classification||B65D75/20, B65D75/26, B65D75/5805|
|Nov 15, 1989||AS||Assignment|
Owner name: KABUSHIKI KAISHA HOSOKAWA YOKO, JAPAN
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:OHSIMA, SHIGEYUKI;MOTEKI, YOSHIJI;REEL/FRAME:005181/0946
Effective date: 19881111
|Jun 28, 1993||FPAY||Fee payment|
Year of fee payment: 4
|Aug 26, 1997||FPAY||Fee payment|
Year of fee payment: 8
|Aug 24, 2001||FPAY||Fee payment|
Year of fee payment: 12